For critical patients DIU and first aid should be perfomed at the same time. If BP maintained above 12/6.7kPa, this kind of examination should be done even the patient suffered from renal failure or severe trauma of both kidneys.

• 作者认为只要血压维持在12/6.；7kPa(90/50mmHg)以上；甚至有急性肾功能衰竭或严重双肾损伤者；仍可进行该项检查。